DIY Adjustable Strobe Light | DPDT Relay Circuit with BD139 & BC547
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DIY Adjustable Strobe Light | DPDT Relay Circuit with BD139 & BC547
In this video, I’m building a DIY adjustable strobe light using a DPDT 12–15V relay with a simple transistor driver circuit. The project is powered by BD139 and BC547 transistors, along with a 220Ω resistor, 1000µF 25V capacitor, and a 10K potentiometer to control the flash rate. This easy circuit is perfect for electronics hobbyists who ...
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